To make icing:
1. Sift icing sugar into bowl and add just enough lemon juice to form a spreadable icing.
Add less rather than more juice and adjust the consistency till you get it right.
2. To color the icing, use a toothpick to add drops of color to the icing. I know it's Christmas, but please use less rather than more color, or it will all look like an Austin Powers Shagadelic party gone wrong.
3. Ice the gingerbread cookies and decorate as you will.